1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
** Copyright 2000 Double Precision, Inc. See COPYING for
** distribution information.
*/
/*
*/
#if HAVE_CONFIG_H
#include "rfc2045_config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if HAVE_STRINGS_H
#include <strings.h>
#endif
#include <ctype.h>
#include "rfc2045.h"
extern void rfc2045_enomem();
/*
** ---------------------------------------------------------------------
** Attempt to parse Content-Base: and Content-Location:, and return the
** "base" of all the relative URLs in the section.
** ---------------------------------------------------------------------
*/
static void get_method_path(const char *p,
const char **method,
unsigned *methodl,
const char **path)
{
unsigned i;
for (i=0; p && p[i]; i++)
{
if (p[i] == ':')
{
*method=p;
*methodl= ++i;
*path=p+i;
return;
}
if (!isalpha( (int)(unsigned char)p[i]))
break;
}
*method=0;
*methodl=0;
*path=p;
}
char *rfc2045_append_url(const char *base, const char *loc)
{
const char *base_method;
unsigned base_method_l;
const char *base_path;
const char *loc_method;
unsigned loc_method_l;
const char *loc_path;
char *buf, *q;
get_method_path(base, &base_method, &base_method_l, &base_path);
get_method_path(loc, &loc_method, &loc_method_l, &loc_path);
if (loc_method_l)
{
buf=malloc(strlen(loc)+1);
if (!buf)
return NULL;
else
strcpy(buf, loc);
return (buf);
}
loc_method=base_method;
loc_method_l=base_method_l;
if (!base_path) base_path="";
if (!loc_path) loc_path="";
buf=malloc(loc_method_l + strlen(base_path)+strlen(loc_path) + 3);
if (!buf)
{
return NULL;
}
if (loc_method_l)
memcpy(buf, loc_method, loc_method_l);
buf[loc_method_l]=0;
q=buf + loc_method_l;
strcat(strcpy(q, base_path), "/");
if ( loc_path[0] == '/')
{
char *r;
if (loc_path[1] == '/')
/* Location is absolute */
{
*q=0;
}
/* Relative to top of base */
else if ( q[0] == '/' && q[1] == '/' &&
(r=strchr(q+2, '/')) != 0)
{
*r=0;
}
else
*q=0; /* No sys in base, just start with / */
}
strcat(q, loc_path);
return (buf);
}
char *rfc2045_content_base(struct rfc2045 *p)
{
return (rfc2045_append_url(p->content_base, p->content_location));
}
|
